extinguishment vs relinquishment

extinguishment

noun
  • The act of extinguishing, putting out, or quenching, or the state of being extinguished. 

  • The annihilation or extinction of a right or obligation. 

relinquishment

noun
  • The act of relinquishing something. 

How often have the words extinguishment and relinquishment occurred in a corpus of books? (source: Google Ngram Viewer )